Operation of gas-engines



(No Model.)

' M. BLAKBY. v OPERATION OF GAS ENGINES.

No; 571,966. Patented Nov. 24, 189 6.

INITTNEEEEE: v lNVENTUR V Nmimmmfl vwbewdt 1960/4 (9 QZW of theinvention, such as will enable others UNITED STATES PATENT OFFICE.

MILDRED BLAKEY, OF PITTSBURG, PENNSYLVANIA.

OPERATION OF GAS-ENGINES.

SPECIFICATION forming part of Letters Patent No. 571,966, dated November24, 1896.

Application filed March 18, 1896.

To all whom, it may concern:

Be it known that I, MILDRED BLAKEY, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements in theOperation of Gas-Engines; and I do declare the following to be a full,clear, and exact description skilled in the art to which it appertainsto make and use the same, reference being had to the accompanyingdrawings, and to the figures of reference marked thereon, which form apart of this specification.

My invention relates to improvements in the operation of gas or otherexplosive engines, a description of which will be fully shown anddescribed in the accompanying drawings and specification, in whichFigure 1 is a sectional view through the cylinder and showing myimprovement. Fig. 2 is an end view of a portion of the cylinder and alsoshowing my improvement. Fig. 3 is a view of a water-jacket for keepingthe piston-rod cool.

Similar figures refer to similar parts in views shown.

In applying my improvement I do not confine myself to any particularmake or style of gas or other explosive engine cylinders. Therefore theone shown is sufficient to illustrate my improvements and the advantagesderived therefrom.

The cylinder 1 and heads 2 and 3 form a complete cylinder and isprovided with the usual piston-rod l and piston-head 9, exhaust-valves Iand 7, air-valves G and S, and gas-valve 5. A suitable explosive deviceis assumed to be attached for exploding the gas at the proper moment,and also the valves to be operated at the proper time by suitablemechanism. v

In my improvement I provide the port or ports 11 within the interior ofthe cylinder, the operation and use of which are as follows: Theair-valve 6 and gas-valve open and admit air and gas to the rear end ofthe cylinder. The piston-head 9 travels to the forward end of thecylinder on the first forward stroke, and on its stroke back to the rearend the gas and air within the rear end Serial No. 583,718. (No model.)

are compressed and ignited and force the piston forward on its secondstroke, and when the piston-head is over the port or ports 11 theexpanded air and gas in the rear end of the cylinder escape through theport or ports 11 into the forward end. The said forward end being filledwith compressed air and the gas and air in the rear end being greater inpressure the said gas and air escape into the forward end of thecylinder and force the piston back to the rear end, and the exhaustvalveI opens and exhausts the balance of expanded air and gas. The pistonthen travels forward on its next stroke, and the exhaust-valve 7 openson the forward stroke and allows the escape of the expanded air and gasin that end of the cylinder, and the same operation is repeated insuccession. This result is obtained in the double-stroke type ofengines.

In the triple-stroke type of engine the operation is as follows: Thepiston-head is up over the port or ports 11, and air being admitted fromthe valve 8 on the forward end and on the backward stroke to the rearend of the cylinder the exhaust-valve 4 opens and exhausts. Thegas-valve 5 and air-valve 6 then open and admit gas and air, and on thefirst forward stroke the piston compresses the air in the forward end,and when the said piston opens the port or ports 11 the compressed airescapes into the rear end and is still more compressed on the nextbackward stroke. It is then exploded and forces the piston on its nextforward stroke, which opens the port or ports 11. The expanded gas andair escape into the forward end and force the piston on its backwardstroke to the rear end of the cylinder and exhaust from the valve at,and that which remains in the forward end escapes through theexhaust-valve 7. The operation is then repeated in succession.

A water-jacket 12 surrounds the piston-rod and prevents the rod fromoverheating. The said jacket may be arranged to be continually suppliedwith water.

I do not confine myself to my particular shape or style of the ports orvalves, as other arrangements may be used, but the method shown issimple in construction and operation and therefore'is preferable.

Neither do ately of its ends, and conducting the gas and air from oneend of said cylinder to the other end, past said piston and within thechamber of said cylinder, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MILDRED BLAKEY.

Witnesses:

GEO. FOSTER, GEORGE G. BLAKEY.

